Nanometrics Data Formats Reference Guide

Chapter 1: NMXP Data Format
4 bytes long long seconds
1 byte int8 port number
3 bytes int24 Bad command packets received since startup (mod 10 million)
3 bytes int24 Good command packets received since startup (mod 10 million)
3 bytes int24 Packets transmitted since startup (mod 10 million)
2 bytes int16 Lost packets on receive since startup (mod 10 thousand)
1.5.41 Authentication Soh bundle
1 byte int8 bundle type = 59
4 bytes long long seconds
4 bytes int32 number of CD1 subframes built since startup (mod 1 billion)
2 bytes int16 number of subframes with invalid signature since startup (mod 10
thousand)
2 bytes int16 number of subframes with missing status since startup (mod 10
thousand)
2 bytes int16 number of subframes with missing data samples since startup (mod
10 thousand)
2 bytes — spare
1.5.42 TimeServer Instrument Soh bundle
1 byte int8 bundle type = 60
4 bytes long long seconds
2 bytes float16 measured temperature of SOH circuit
2 bytes float16 measured supply voltage of SOH circuit
2 bytes float16 measured bus voltage of NMXbus
2 bytes float16 measured external analog voltage
1 byte int8 bits 0: bus termination indicator
0 = disabled
1 = enabled
bits 1-7; reserved
3 bytes uint24 uptime (minutes); time since last reboot in minutes (mod 10 million)
1.5.43 TimeServer Time PLL Soh bundle
1 byte int8 bundle type = 61
4 bytes long long seconds
3 bytes uint24 subsecond time in fast counts; multiply by 104.17 to get ns.
1 byte int8 bits 0-3: status
0 = initializing
1 = no time
2 = raw time
3 = approximate time
4 = measuring frequency
5-6 reserved
14602R4
Nanometrics Data Formats
2003-11-07 Reference Guide
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